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Health, 20.09.2020 05:01 WilliamYES9164
How does regular exercise help maintain a healthy respiratory system?
A. It helps cilia in the lungs eliminate mucus.
B. It helps lungs from becoming too large.
C. it helps lungs exchange gases at a slower rate.
D. It helps lungs become more efficient at gas exchange.
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How does regular exercise help maintain a healthy respiratory system?
A. It helps cilia in the lung...
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